degree of deradrise

[lobo]

Hello all , does anyone know the degree of deadrise on our 31 bertrams ? I'm trying to purchase a transducer for a new unit . I think it's 21 degrees but not sure . Thank you in advance. Russ- Rascal

[HotSpot]

https://www.bertram31.com/specs/index.html

This shows 24deg at the transom. I think it’s rather consistent through the entire length.

[Tony Meola]

If you are going flush mount by Airmar, the 20-degree unit works. Mine is just off the center line in the area under the companion way. Actually, it is near the starboard engine stringer. If I measured it I bet it would be lined up with the midpoint of the engine.

[lobo]

Thank you, this helps greatly ! Happy Thanksgiving to all